Frey, Friedrich; Schneider, J.; Prandl, W.; Zeyen, C.; Ziebeck, K.
The HCP-FCC transition in pure Co investigated by neutron scattering.
In: Journal of Physics F: Metal Physics, Vol. 9, Nr. 4: S. 603-616
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The martensitic HCP-FCC transition in pure Co at TM approximately 700K exhibits premonitory effects found by purely elastic and by inelastic neutron scattering. Above T/TM approximately 0.95 preformed cubic nuclei start to grow considerably. At about the same temperature the elastic shear constant c44 decreases sharply. Approaching T M the entire TA branch corresponding to c44 goes down in energy. No pronounced soft mode behaviour, however, could be found.